Everyone with sniffles in Jan-Feb claims they had it before anyone else and nobody got tested to rule out flu or other not-novel virus. My friend claimed he had it back then, and somewhat recently knew he had it and had a somewhat severe and prolonged bout with it. Obviously if he had had it back in Feb like he claimed, he'd have had enough immunity to not be so severely affected the 2nd time.
Anyhow, the first confirmed case in Oregon was Feb 29, so even if one french-kissed that person when they were contagious, symptoms would not have developed until March.
The first confirmed case in Washington was Jan 21. It's more plausible if someone who spends time in Seattle contracted it in February.
I'm not saying it's impossible to have had it before the first confirmed cases came in, but I'd bet every penny I have against that theory.
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